CN113068275A - Multicast service implementation method and device and communication equipment - Google Patents

Multicast service implementation method and device and communication equipment Download PDF

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Publication number
CN113068275A
CN113068275A CN202010002085.2A CN202010002085A CN113068275A CN 113068275 A CN113068275 A CN 113068275A CN 202010002085 A CN202010002085 A CN 202010002085A CN 113068275 A CN113068275 A CN 113068275A
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network function
multicast service
multicast
calling
terminal
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CN202010002085.2A
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CN113068275B (en
Inventor
谢振华
王文
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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Priority to CN202010002085.2A priority Critical patent/CN113068275B/en
Application filed by Vivo Mobile Communication Co Ltd filed Critical Vivo Mobile Communication Co Ltd
Priority to EP20909638.7A priority patent/EP4087188A4/en
Priority to BR112022013229A priority patent/BR112022013229A2/en
Priority to PCT/CN2020/141890 priority patent/WO2021136467A1/en
Priority to CA3166529A priority patent/CA3166529A1/en
Priority to AU2020416492A priority patent/AU2020416492B2/en
Priority to KR1020227021991A priority patent/KR102628461B1/en
Priority to JP2022540997A priority patent/JP7357797B2/en
Publication of CN113068275A publication Critical patent/CN113068275A/en
Priority to US17/852,710 priority patent/US20220329986A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
    • H04L65/612—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for unicast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/185—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with management of multicast group membership
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/189—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast in combination with wireless systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1069—Session establishment or de-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
    • H04L65/611—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for multicast or broadcast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/08—Access security
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/08—User group management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/18—Management of setup rejection or failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast

Abstract

The embodiment of the invention discloses a method and a device for realizing a multicast service and communication equipment, belonging to the technical field of communication. The method for realizing the multicast service is applied to a first network function of communication equipment and comprises the following steps: receiving a request carrying multicast service information of a terminal; and executing a unicast session establishment process, and establishing unicast session connection with the terminal. The technical scheme of the invention can enable the multicast service to provide service under the 5G network architecture.

Description

Multicast service implementation method and device and communication equipment
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for implementing a multicast service, and a communication device.
Background
Related technologies provide multicast services based on a network element form, while a core network of a 5G network is a service architecture based on network functions, and multicast services cannot provide services under the 5G network architecture.
Disclosure of Invention
The embodiment of the invention provides a method and a device for realizing a multicast service and communication equipment, which can enable the multicast service to provide services under a 5G network architecture.
In a first aspect, an embodiment of the present invention provides a method for implementing a multicast service, which is applied to a first network function of a communication device, and includes:
receiving a request carrying multicast service information of a terminal;
and executing a unicast session establishment process, and establishing unicast session connection with the terminal.
In a second aspect, an embodiment of the present invention provides a method for implementing a multicast service, which is applied to a second network function of a communication device, and includes:
receiving a first invocation parameter of a first network function, wherein the first invocation parameter is used for invoking a multicast session context service operation of the second network function;
and sending a first calling result to the first network function, wherein the first calling result indicates that the establishment of the multicast session connection fails.
In a third aspect, an embodiment of the present invention further provides a method for implementing a multicast service, where the method is applied to a third network function of a communication device, and includes:
receiving a second calling parameter of a second network function, wherein the second calling parameter is used for calling an authorized service operation of the third network function;
and returning a second calling result to the second network function, wherein the second calling result indicates that an error occurs.
In a fourth aspect, an embodiment of the present invention provides a method for implementing a multicast service, where the method is applied to a terminal and includes:
sending a request carrying multicast service information to a first network function;
a unicast session establishment procedure is performed.
In a fifth aspect, an embodiment of the present invention provides a multicast service implementing apparatus, which is applied to a first network function of a communication device, and includes:
the first receiving module is used for receiving a request carrying multicast service information of a terminal;
and the first execution module is used for executing the unicast session establishment process and establishing unicast session connection with the terminal.
In a sixth aspect, an embodiment of the present invention provides an apparatus for implementing a multicast service, which is applied to a second network function of a communication device, and includes:
a second receiving module, configured to receive a first invocation parameter of a first network function, where the first invocation parameter is used to invoke a multicast session context service operation of the second network function;
a first sending module, configured to send a first call result to the first network function, where the first call result indicates that establishment of a multicast session connection fails.
In a seventh aspect, an embodiment of the present invention provides a multicast service implementing apparatus, which is applied to a third network function of a communication device, and includes:
a third receiving module, configured to receive a second call parameter of a second network function, where the second call parameter is used to call an authorized service operation of the third network function;
and the second sending module is used for returning a second calling result to the second network function, and the second calling result indicates that an error occurs.
In an eighth aspect, an embodiment of the present invention provides a multicast service implementing apparatus, which is applied to a terminal, and includes:
a third sending module, configured to send a request carrying multicast service information to the first network function;
and the second execution module is used for executing the unicast session establishment process.
In a ninth aspect, an embodiment of the present invention further provides a communication device, where the communication device includes a processor, a memory, and a computer program stored in the memory and running on the processor, and the processor implements the steps of the multicast service implementing method when executing the computer program.
In a tenth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when executed by a processor, the computer program implements the steps of the multicast service implementing method described above.
In the above scheme, when the terminal requests the multicast service, after the first network function interacts with the second network function, the first network function executes a unicast session establishment process with the terminal, establishes a unicast session connection with the terminal, and can configure the service based on the 5G network architecture as a multicast service providing service.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a flowchart of a method for implementing a multicast service according to an embodiment of the present invention;
fig. 2 is a second flowchart of a method for implementing a multicast service according to an embodiment of the present invention;
fig. 3 is a third flowchart of a method for implementing a multicast service according to an embodiment of the present invention;
fig. 4 is a fourth flowchart of a method for implementing a multicast service according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a multicast service according to an embodiment of the present invention;
fig. 6 is a fifth flowchart of a method for implementing a multicast service according to an embodiment of the present invention;
fig. 7 is a sixth flowchart of a method for implementing a multicast service according to an embodiment of the present invention;
fig. 8 is a seventh flowchart of a method for implementing a multicast service according to an embodiment of the present invention;
FIG. 9 is a block diagram of a first network function according to an embodiment of the present invention;
FIG. 10 is a diagram illustrating a second network function according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a third network function according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 13 is a schematic structural diagram of a communication device according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. In the description and in the claims "and/or" means at least one of the connected objects.
The following description provides examples and does not limit the scope, applicability, or configuration set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the spirit and scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described methods may be performed in an order different than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
Optionally, the communication device in the embodiment of the present invention may be a terminal or a network device. The terminal may also be referred to as a terminal Device or a User Equipment (UE), where the terminal may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or a vehicle-mounted Device, and a specific type of the terminal is not limited in the embodiment of the present invention.
The network device may be a base station or a core network element. The Base Station may be a 5G or later-version Base Station (e.g., a gNB, a 5G NR NB, etc.), or a Base Station in other communication systems (e.g., an eNB, a WLAN access point, or other access points, etc.), and may be referred to as a node B, an evolved node B, an access point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access point, a WiFi node, or some other suitable term in the field, which is not limited to a specific technical vocabulary as long as the same technical effect is achieved.
The core network element may be an Access and Mobility Management Function (AMF), which may also be referred to as an Access Management Function; and optionally a Session Management Function (SMF).
The third Generation Partnership Project (3 GPP) defines a multicast Service subscriber joining process of a mobile network, but the process is only applicable to 2G, 3G and 4G networks, a core network of a 5G network adopts a Service Based Architecture (Service Based Architecture), the core network no longer provides services Based on network elements with complete software and hardware, but is Based on network functions in a software form, and an existing multicast Service network element cannot adapt to a new Architecture through simple change, so that the existing multicast Service cannot be applied to the 5G network.
The embodiment of the invention provides a method and a device for realizing a multicast service and communication equipment, which can enable the multicast service to provide services under a 5G network architecture.
An embodiment of the present invention provides a method for implementing a multicast service, which is applied to a first network function of a communication device, and as shown in fig. 1, the method includes:
step 11: receiving a request carrying multicast service information of a terminal;
step 12: and executing a unicast session establishment process, and establishing unicast session connection with the terminal.
In this embodiment, after receiving a request carrying multicast service information from a terminal, the first network function executes a unicast session establishment procedure to establish a unicast session connection with the terminal, so that the multicast service can provide services under a 5G network architecture.
In an exemplary embodiment of the invention, the method further comprises:
sending a first calling parameter to a second network function, wherein the first calling parameter is used for calling a multicast session context service operation of the second network function;
and receiving a first calling result of the second network function, wherein the first calling result indicates that the establishment of the multicast session connection fails.
In an exemplary embodiment of the invention, the request comprises any one of:
a multicast session establishment request;
a first data packet for requesting to join a multicast group;
a unicast session establishment request.
In an exemplary embodiment of the present invention, the first invocation parameter includes a user identifier of the terminal and the multicast service information.
In an exemplary embodiment of the present invention, the multicast service information includes at least one of: the multicast session management system comprises a multicast address, a multicast group identification and first indication information for indicating the multicast session.
In an exemplary embodiment of the invention, the request may be delivered to the first network function via a signalling path; or
The request may be delivered to the first network function via a user plane path.
In an exemplary embodiment of the present invention, the first call result may further include at least one of:
second indication information indicating whether the user is in the multicast service group;
the reason for failure.
In an exemplary embodiment of the invention, the method further comprises:
and sending the failure reason and/or the second indication information to the terminal. After the failure reason is sent to the terminal, the terminal can be made to know the failure reason.
In the embodiment of the present invention, the first network function may be an AMF or an SMF.
In the embodiments of the present invention, the terminal and the terminal user are different concepts. The end user may be understood as the owner of the terminal, the user of the terminal.
An embodiment of the present invention provides a method for implementing a multicast service, which is applied to a second network function of a communication device, and as shown in fig. 2, the method includes:
step 21: receiving a first invocation parameter of a first network function, wherein the first invocation parameter is used for invoking a multicast session context service operation of the second network function;
step 22: and sending a first calling result to the first network function, wherein the first calling result indicates that the establishment of the multicast session connection fails.
In an exemplary embodiment of the present invention, the method may further include:
sending a second calling parameter to a third network function, wherein the second calling parameter is used for calling an authorized service operation of the third network function;
and receiving a second calling result of the third network function, wherein the second calling result indicates that an error occurs.
In an exemplary embodiment of the present invention, the second parameter may further include a user identifier of the terminal and multicast service information. The multicast service information includes at least one of: the multicast session management system comprises a multicast address, a multicast group identification and first indication information for indicating the multicast session.
In an exemplary embodiment of the present invention, the second call result may include at least one of:
third indication information indicating that the user is in the multicast service group or not in the multicast service group;
group identification of multicast service group;
the reason for failure.
The second network function may send the failure reason to the first network function so that the first network function learns the failure reason.
In the embodiment of the present invention, the second network function may be a Broadcast Multicast Session Management (MBSF); or AMF and MBSF; or SMF and MBSF.
An embodiment of the present invention provides a method for implementing a multicast service, which is applied to a third network function of a communication device, and as shown in fig. 3, the method includes:
step 31: receiving a second calling parameter of a second network function, wherein the second calling parameter is used for calling an authorized service operation of the third network function;
step 32: and returning a second calling result to the second network function, wherein the second calling result indicates that an error occurs.
In an exemplary embodiment of the present invention, the returning of the second call result to the second network function includes any one of:
returning a second calling result to the second network function based on the user identification of the terminal and the multicast service information in the second parameter; or
Receiving event operation information of a fourth network function, sending a decision request to the fourth network function, and receiving a third result of the fourth network function, wherein the third result indicates that an error occurs.
In an embodiment of the present invention, the third network Function may be a Broadcast Multicast Policy Control Function (MBPCF).
An embodiment of the present invention provides a method for implementing a multicast service, which is applied to a terminal, and as shown in fig. 4, the method includes:
step 41: sending a request carrying multicast service information to a first network function;
step 42: a unicast session establishment procedure is performed.
In an exemplary embodiment of the invention, the request comprises any one of:
a multicast session establishment request;
a first data packet for requesting to join a multicast group;
a unicast session establishment request.
In an exemplary embodiment of the present invention, the performing the unicast session establishment procedure includes any one of:
receiving a notification of establishing a unicast session connection;
initiating establishment of unicast session connection;
the unicast session establishment procedure is completed.
In an exemplary embodiment of the invention, the request may be delivered to the first network function via a signalling path; or
The request may be delivered to the first network function via a user plane path.
In an exemplary embodiment of the invention, the method further comprises receiving at least one of the following information of the first network function;
second indication information indicating whether the user is in the multicast service group;
the reason for failure.
After the terminal receives the failure reason, the failure reason can be acquired.
In the embodiments of the present invention, the terminal and the terminal user are different concepts. The end user may be understood as the owner of the terminal, the user of the terminal.
Fig. 5 is a schematic diagram of a multicast service architecture according to an embodiment of the present invention, and as shown in fig. 5, an interface R101 is used for signaling interaction between a terminal (User Equipment, UE) and an Access Management Function (AMF). The interface R102 is used for signaling and data interaction between a terminal and a Radio Access Network (RAN), that is, a base station system. The interface R103 is used for signaling interaction between the radio access system and the AMF. The interface R104 is used for controlling signaling interaction between a User Plane Function (UPF) and a Session Management Function (SMF). The interface R105 is used for control signaling interaction between Multicast Broadcast User plane functions (MBUF). The service call S106 opens various access management-related services for the AMF to be called by other Network Functions (NF). The servitization call S107 opens up various session management related services for the SMF for other NF calls. The service invocation S108 opens up various Broadcast-Multicast Policy Control related services for other NFs to invoke for a Broadcast-Multicast Policy Control Function (MBPCF). The service invocation S109 opens various Broadcast Multicast Session Management related services for other NFs to a Broadcast Multicast Session function (MBSF).
In a specific embodiment of the present invention, a first network function may convert a multicast service into a unicast transmission mode according to a user request of a terminal, as shown in fig. 6, the embodiment includes the following steps:
step 201: the terminal finds that the broadcast signal is degraded and wants to still receive the related data content;
step 202: a terminal sends a unicast Session Establishment Request to an SMF, for example, sends a PDU Session Establishment Request message, where the unicast Session Establishment Request carries Multicast service information, such as a Multicast address (Multicast IP), or a Multicast Group identity (TMGI), or indication information used for indicating Establishment of a Multicast Session;
step 203: the SMF calls a multicast context user leave service operation, such as calling an Nmbsf _ MBContext _ UserDelete operation, to the MBSF serving the multicast service indicated by the multicast service information, and the parameters include a user identifier (such as an International Mobile Subscriber Identity (IMSI)) and multicast service information;
step 204: the MBSF calls a user leaving authorization service operation of the MBPCF, such as an Nmbpcf _ PolicyAuthorization _ UserDelete operation, and parameters comprise user identification and multicast service information;
step 205: optionally, the MBPCF notifies an application corresponding to the multicast service, and notifies that a user leaves the multicast group, where the notification message includes a second user Identifier (for example, an IMSI or a General Public user Identifier, General Public Subscriber Identifier, abbreviated as GPSI, queried by the IMSI);
step 206: the MBPCF determines that the user is in the corresponding multicast Group, deletes the user from the corresponding Group, or the MBPCF receives an application return result indicating that the user is in the multicast service Group, optionally, the MBPCF returns the result to the MBSF, and may carry a Group identifier, such as a Temporary Mobile Group Identity (TMGI), and may also carry indication information indicating that the user is in the Group or not in the Group;
step 207: optionally, the MBSF returns a call result to the SMF, which may include indication information indicating that the user is in the group or not in the group;
step 208: after step 202, the SMF performs a unicast Session Establishment procedure, that is, a PDU Session Establishment procedure, or after step 207, the SMF performs a unicast Session Establishment procedure, that is, a PDU Session Establishment procedure, and carries the indication information in step 207 in a unicast Session Establishment completion message (for example, a PDU Session Establishment Accept) sent to the terminal.
In this embodiment, the first network function is an SMF, the second network function is an MBSF, and the second network function may also be a combination of an SMF and an MBSF, where step 203 and step 207 are internal operations.
In another specific embodiment of the present invention, the first network function converts the multicast service into a unicast transmission mode according to a user request of the terminal, as shown in fig. 7, the embodiment includes the following steps:
step 301: a terminal is interested in a certain multicast service, such as interaction with an application server of a content provider through an APP or acquisition through wireless broadcast information;
step 302: a terminal sends a Multicast Session Establishment Request to an SMF, for example, sends an MB Session Establishment Request message, where the Multicast Session Establishment Request carries Multicast service information, such as a Multicast address (Multicast IP), or a Multicast Group identity (TMGI), or indication information used for indicating Establishment of a Multicast Session, and also carries information required for Establishment of a unicast Session;
or the multicast Session Establishment Request is represented by multicast service information carried in a unicast Session Establishment Request (such as a PDU Session Establishment Request message);
step 303: the SMF calls a multicast context user join service operation of the MBSF, for example, calls an Nmbsf _ MBContext _ UserAdd operation, and the parameters include a user identifier (such as IMSI) and multicast service information;
step 304: the MBSF calls a user joining authorization service operation of the MBPCF, such as an Nmbpcf _ PolicyAuthorization _ UserAdd operation, and parameters comprise user identification and multicast service information;
step 305: optionally, the MBPCF notifies an application corresponding to the multicast service, and notifies that there is a user joining the multicast group, where the notification message includes a second subscriber identity (for example, an IMSI or a GPSI queried by the IMSI);
step 306: MBPCF judges that the user allows to receive corresponding multicast group data, but the number of users in the group is too small, only a unicast mode is allowed to be used, or the MBPCF receives a return result of application and indicates that only the unicast mode is allowed to be used, and the MBPCF returns the result to the MBSF and indicates that unicast establishment is allowed, and the MBPCF can carry group identification such as TMGI and also can carry reason information such as the number of users too small;
step 307: the MBSF returns a calling result to the SMF to indicate that unicast is allowed to be established, and the result can contain reason information;
step 308: the SMF executes the unicast Session Establishment procedure, that is, the PDU Session Establishment procedure, and may carry the reason information in step 307 in the unicast Session Establishment completion message (for example, PDU Session Establishment Accept) sent to the terminal.
In this embodiment, the first network function is an SMF, the second network function is an MBSF, and the second network function may also be a combination of an SMF and an MBSF, where steps 303 and 307 are internal operations.
In another specific embodiment of the present invention, the first network function converts the multicast service into a unicast transmission mode according to a user request of the terminal, as shown in fig. 8, this embodiment includes the following steps:
step 401: a terminal is interested in a certain multicast service, such as interaction with an application server of a content provider through an APP or acquisition through wireless broadcast information;
step 402: a terminal sends an IP packet through a user plane, and uses an add Multicast message in a Multicast Protocol, such as an Internet Group Management Protocol (IGMP) join message or a Multicast Listener Discovery (MLD) message, where a source address of the IP packet is an IP address of the terminal, and a destination address is a Multicast Group address, that is, a Multicast IP address;
step 403: UPF informs SMF of data arrival and forwards the intercepted IP message;
step 404: the SMF calls a multicast context user join service operation of the MBSF, for example, calls an Nmbsf _ MBContext _ UserAdd operation, and the parameters include a user identifier (such as IMSI) and multicast service information;
step 405: the MBSF calls a user joining authorization service operation of the MBPCF, such as an Nmbpcf _ PolicyAuthorization _ UserAdd operation, and parameters comprise user identification and multicast service information;
step 406: optionally, the MBPCF notifies an application corresponding to the multicast service, and notifies that there is a user joining the multicast group, where the notification message includes a second subscriber identity (for example, an IMSI or a GPSI queried by the IMSI);
step 407: MBPCF judges that the user allows to receive corresponding multicast group data, but the number of users in the group is too small, only a unicast mode is allowed to be used, or the MBPCF receives a return result of application and indicates that only the unicast mode is allowed to be used, and the MBPCF returns the result to the MBSF and indicates that unicast establishment is allowed, and the MBPCF can carry group identification such as TMGI and also can carry reason information such as the number of users too small;
step 408: the MBSF returns a calling result indication to the SMF to allow Establishment of unicast, and the MBSF can contain reason information, and can also directly contain a message which is sent to a terminal and used for notifying Establishment of unicast connection, such as an initial PDU Session Establishment Notification, wherein the message can contain the reason information;
step 409: the SMF sends a message notifying the terminal to establish the unicast connection, for example, sends an Initiate PDU Session Establishment Notification, and may also forward a received message from the MBSF notifying the terminal to establish the unicast connection;
step 410: the terminal executes the unicast Session Establishment procedure, i.e. the PDU Session Establishment procedure, and may carry the reason information in step 408 in the unicast Session Establishment completion message (e.g. PDU Session Establishment accept) sent to the terminal.
In this embodiment, the first network function is an SMF, the second network function is an MBSF, and the second network function may also be a combination of an SMF and an MBSF, where steps 404 and 408 are internal operations.
The foregoing embodiment describes a method for implementing a multicast service according to the present invention, and a communication device corresponding to the method for implementing a multicast service according to the present invention is described below with reference to the embodiment and the drawings.
Referring to fig. 9, fig. 9 is a schematic structural diagram of a multicast service implementing apparatus according to an embodiment of the present invention, where the multicast service implementing apparatus is applied to a first network function of a communication device. As shown in fig. 9, the multicast service implementing apparatus 50 includes:
a first receiving module 51, configured to receive a request carrying multicast service information from a terminal;
a first executing module 52, configured to execute a unicast session establishing procedure, and establish a unicast session connection with the terminal.
In this embodiment, the first network function 50 can implement each process implemented in the method embodiment shown in fig. 1 of the present invention, and achieve the same beneficial effects, and for avoiding repetition, details are not described here again.
Referring to fig. 10, fig. 10 is a schematic structural diagram of a multicast service implementing apparatus according to an embodiment of the present invention, where the multicast service implementing apparatus is applied to a second network function of a communication device. As shown in fig. 10, the multicast service implementing apparatus 60 includes:
a second receiving module 61, configured to receive a first invocation parameter of a first network function, where the first invocation parameter is used to invoke a multicast session context service operation of the second network function;
a first sending module 62, configured to send a first invocation result to the first network function, where the first invocation result indicates that a failure occurs to establish a multicast session connection.
In this embodiment, the second network function 60 can implement each process implemented in the method embodiment shown in fig. 2 of the present invention, and achieve the same beneficial effects, and for avoiding repetition, details are not described here again.
Referring to fig. 11, fig. 11 is a schematic structural diagram of a multicast service implementing apparatus according to an embodiment of the present invention, where the multicast service implementing apparatus is applied to a third network function of a communication device. As shown in fig. 11, the multicast service implementing apparatus 70 includes:
a third receiving module 71, configured to receive a second invocation parameter of a second network function, where the second invocation parameter is used to invoke an authorized service operation of the third network function;
a second sending module 72, configured to return a second call result to the second network function, where the second call result indicates that an error occurs.
In this embodiment, the second network function 70 can implement each process implemented in the method embodiment shown in fig. 3 of the present invention, and achieve the same beneficial effects, and for avoiding repetition, details are not described here again.
Referring to fig. 12, fig. 12 is a schematic structural diagram of a communication device according to an embodiment of the present invention, where the communication device is a terminal. As shown in fig. 12, the terminal 80 includes:
a third sending module 81, configured to send a request carrying multicast service information to the first network function;
a second performing module 82, configured to perform a unicast session establishment procedure.
In this embodiment, the terminal 80 can implement each process implemented in the method embodiment shown in fig. 4 of the present invention, and achieve the same beneficial effects, and for avoiding repetition, details are not described here.
Referring to fig. 13, fig. 13 is a schematic structural diagram of another communication device according to an embodiment of the present invention, and as shown in fig. 13, a communication device 90 includes: a processor 91, a memory 92 and a computer program stored on the memory 92 and capable of running on the processor, wherein the components in the communication device 90 are coupled together by a bus interface 93, and the computer program, when executed by the processor 91, can implement the processes implemented in the method embodiment shown in fig. 1, or implement the processes implemented in the method embodiment shown in fig. 2, or implement the processes implemented in the method embodiment shown in fig. 3, or implement the processes implemented in the method embodiment shown in fig. 4, or implement the processes implemented in the method embodiment shown in fig. 6, or implement the processes implemented in the method embodiment shown in fig. 7, or implement the processes implemented in the method embodiment shown in fig. 8, and achieve the same technical effects, to avoid repetition, further description is omitted here.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when executed by a processor, the computer program implements each process implemented in the method embodiment shown in fig. 1, or implements each process implemented in the method embodiment shown in fig. 2, or implements each process implemented in the method embodiment shown in fig. 3, or implements each process implemented in the method embodiment shown in fig. 4, or implements each process implemented in the method embodiment shown in fig. 6, or implements each process implemented in the method embodiment shown in fig. 7, or implements each process implemented in the method embodiment shown in fig. 8, and may achieve the same technical effect, and in order to avoid repetition, details are not described here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention or a part thereof, which essentially contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network side device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
Furthermore, it is to be noted that in the device and method of the invention, it is obvious that the individual components or steps can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of performing the series of processes described above may naturally be performed chronologically in the order described, but need not necessarily be performed chronologically, and some steps may be performed in parallel or independently of each other. It will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the present invention may be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which can be implemented by those skilled in the art using their basic programming skills after reading the description of the present invention.
Thus, the objects of the invention may also be achieved by running a program or a set of programs on any computing device. The computing device may be a general purpose device as is well known. The object of the invention is thus also achieved solely by providing a program product comprising program code for implementing the method or the apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is to be understood that the storage medium may be any known storage medium or any storage medium developed in the future. It is further noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims (25)

1. A method for realizing multicast service is applied to a first network function of communication equipment, and is characterized by comprising the following steps:
receiving a request carrying multicast service information of a terminal;
and executing a unicast session establishment process, and establishing unicast session connection with the terminal.
2. The method for implementing multicast service according to claim 1, wherein the method further comprises:
sending a first calling parameter to a second network function, wherein the first calling parameter is used for calling a multicast session context service operation of the second network function;
and receiving a first calling result of the second network function, wherein the first calling result indicates that the establishment of the multicast session connection fails.
3. The method of claim 2, wherein the first invocation parameter includes a user identifier of the terminal and the multicast service information.
4. The method of claim 1, wherein the request comprises any one of:
a multicast session establishment request;
a first data packet for requesting to join a multicast group;
a unicast session establishment request.
5. The method of claim 1, wherein the multicast service information comprises at least one of the following: the multicast session management system comprises a multicast address, a multicast group identification and first indication information for indicating the multicast session.
6. The method of claim 1,
the request is sent to the first network function over a signaling path; or
The request is delivered to the first network function via a user plane path.
7. The method of claim 2, wherein the first invocation result further includes at least one of the following:
second indication information indicating whether the user is in the multicast service group;
the reason for failure.
8. The method for implementing multicast service according to claim 7, wherein the method further comprises:
and sending the failure reason and/or the second indication information to the terminal.
9. A method for realizing multicast service is applied to a second network function of communication equipment, and is characterized by comprising the following steps:
receiving a first invocation parameter of a first network function, wherein the first invocation parameter is used for invoking a multicast session context service operation of the second network function;
and sending a first calling result to the first network function, wherein the first calling result indicates that the establishment of the multicast session connection fails.
10. The method of claim 9, wherein the method further comprises:
sending a second calling parameter to a third network function, wherein the second calling parameter is used for calling an authorized service operation of the third network function;
and receiving a second calling result of the third network function, wherein the second calling result indicates that an error occurs.
11. The method of claim 10, wherein the second invocation parameter includes a user identifier of the terminal and the multicast service information.
12. The method of claim 10, wherein the second invocation result includes at least one of:
third indication information indicating that the user is in the multicast service group or not in the multicast service group;
group identification of multicast service group;
the reason for failure.
13. A method for realizing multicast service is applied to a third network function of communication equipment, and is characterized by comprising the following steps:
receiving a second calling parameter of a second network function, wherein the second calling parameter is used for calling an authorized service operation of the third network function;
and returning a second calling result to the second network function, wherein the second calling result indicates that an error occurs.
14. The method of claim 13, wherein returning the second call result to the second network function comprises any of:
returning a second calling result to the second network function based on the user identification of the terminal and the multicast service information in the second parameter; or
Receiving event operation information of a fourth network function, sending a decision request to the fourth network function, and receiving a third result of the fourth network function, wherein the third result indicates that an error occurs.
15. A method for realizing multicast service is applied to a terminal, and is characterized by comprising the following steps:
sending a request carrying multicast service information to a first network function;
a unicast session establishment procedure is performed.
16. The method of claim 15, wherein the request comprises any one of:
a multicast session establishment request;
a first data packet for requesting to join a multicast group;
a unicast session establishment request.
17. The method of claim 15, wherein the performing the unicast session establishment procedure comprises any one of the following:
receiving a notification of establishing a unicast session connection;
initiating establishment of unicast session connection;
the unicast session establishment procedure is completed.
18. The method of claim 15, wherein the multicast service is executed in a multicast service provider,
the request is sent to the first network function over a signaling path; or
The request is delivered to the first network function via a user plane path.
19. The method of claim 15, further comprising receiving at least one of the following information of the first network function;
second indication information indicating whether the user is in the multicast service group;
the reason for failure.
20. A multicast service implementing device applied to a first network function of a communication device, comprising:
the first receiving module is used for receiving a request carrying multicast service information of a terminal;
and the first execution module is used for executing the unicast session establishment process and establishing unicast session connection with the terminal.
21. A multicast service implementing device applied to a second network function of a communication device, comprising:
a second receiving module, configured to receive a first invocation parameter of a first network function, where the first invocation parameter is used to invoke a multicast session context service operation of the second network function;
a first sending module, configured to send a first call result to the first network function, where the first call result indicates that establishment of a multicast session connection fails.
22. A multicast service implementing device applied to a third network function of a communication device, comprising:
a third receiving module, configured to receive a second call parameter of a second network function, where the second call parameter is used to call an authorized service operation of the third network function;
and the second sending module is used for returning a second calling result to the second network function, and the second calling result indicates that an error occurs.
23. A multicast service implementation device applied to a terminal is characterized by comprising:
a third sending module, configured to send a request carrying multicast service information to the first network function;
and the second execution module is used for executing the unicast session establishment process.
24. A communication device comprising a processor, a memory, and a computer program stored on the memory and running on the processor, the processor implementing the steps of the multicast service implementing method according to any one of claims 1 to 19 when executing the computer program.
25. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, implements the steps of the multicast service implementing method according to any one of claims 1 to 19.
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